EP 0297635 A1 19890104 - Picture display system including a deflection unit with a double saddle coil system.
Title (en)
Picture display system including a deflection unit with a double saddle coil system.
Title (de)
Bildröhre mit einem aus Sattelspulen bestehenden Ablenksystem.
Title (fr)
Tube image comportant un déflecteur constitué par des bobinages en forme de selle.
Publication
Application
Priority
NL 8701276 A 19870529
Abstract (en)
Self-convergent picture display system with a colour display tube (1) and an electromagnetic deflection unit (5). The deflection unit (5) comprises a field deflection coil (8) and a line deflection coil (7) which are both of the saddle type and are particularly wound directly on a support. The deflection unit also comprises a pair of magnetically permeable portions (12, 13) which are arranged symmetrically with respect to the plane of symmetry of the field deflection coil (8) on either side of the tube axis. The magnetically permeable portion withdraw magnetic flux from the end of the yoke ring in order to extend the vertical deflection field. A self-convergent system can be realised with different screen formats by choosing different lengths of the magnetically permeable portions.
IPC 1-7
IPC 8 full level
G09G 1/28 (2006.01); G09G 1/00 (2006.01); G09G 1/04 (2006.01); H01J 29/76 (2006.01); H04N 9/28 (2006.01)
CPC (source: EP KR US)
H01J 29/76 (2013.01 - KR); H01J 29/762 (2013.01 - EP US)
Citation (search report)
- [A] US 4357586 A 19821102 - BARKOW WILLIAM H, et al
- [AD] GB 2029089 A 19800312 - PHILIPS NV
- [AD] EP 0102658 A1 19840314 - PHILIPS NV [NL]
- [A] GB 2139415 A 19841107 - PHILIPS NV
- [A] DE 3126344 A1 19830224 - SROWIG REINHARD, et al
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0297635 A1 19890104; EP 0297635 B1 19930818; DE 3883317 D1 19930923; DE 3883317 T2 19940310; JP S63310543 A 19881219; KR 880014635 A 19881224; KR 970001593 B1 19970211; NL 8701276 A 19881216; US 4874983 A 19891017
DOCDB simple family (application)
EP 88201021 A 19880520; DE 3883317 T 19880520; JP 12721188 A 19880526; KR 880006154 A 19880526; NL 8701276 A 19870529; US 19665288 A 19880519